Is it a good idea to feed my cat only wet food?

My cat isnt too interested in dry food unless its treats. She does eat it when shes extremely hungry, but would rather just eat wet food (what cat wouldnt, right?!) and she gets one small can every morning. Would it be ok to feed her a couple cans of wet a day and the occasional hard treat to help clean her teeth or are there more benefits to feeding a bigger hard cat food diet? I have tried multiple kinds of hard food and she isnt really interested in any of them. Thanks